{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1361137046497946368.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1016/s0012-821x(00)00171-0"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:S0012821X00001710?httpAccept=text/xml"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:S0012821X00001710?httpAccept=text/plain"}}],"dc:title":[{"@value":"Transitions in thermal convection with strongly temperature-dependent viscosity in a wide box"}],"description":[{"notation":[{"@value":"Numerical models are systematically presented for time-dependent thermal convection of Newtonian fluid with strongly temperature-dependent viscosity in a two-dimensional rectangular box of aspect ratio 3 at various values of the Rayleigh number Rab defined with viscosity at the bottom boundary up to 1.6×108 and the viscosity contrast across the box rη up to 108. We found that there are two different series of bifurcations that take place as rη increases. One series of bifurcations causes changes in the behavior of the thermal boundary layer along the surface boundary from small-viscosity-contrast (SVC) mode, through transitional (TR) mode, to stagnant-lid (ST) mode, or from SVC mode directly to ST mode, depending on Rab. Another series of bifurcations causes changes in the aspect ratio of convection cells; convection with an elongated cell can take place at moderate rη (103–105.5 at Rab=6×106), while only convection of aspect ratio close to 1 takes place at small rη and large rη. The parameter range of rη and Rab for elongated-cell convection overlaps the parameter range for SVC and ST modes and include the entire parameter range for TR mode. In the elongated-ST regime, the lid of highly viscous fluid along the top boundary is not literally ‘stagnant’ but can horizontally move at a velocity high enough to induce a convection cell with aspect ratio much larger than 1."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1381137046497946369","@type":"Researcher","foaf:name":[{"@value":"Masanori Kameyama"}]},{"@id":"https://cir.nii.ac.jp/crid/1381137046497946368","@type":"Researcher","foaf:name":[{"@value":"Masaki Ogawa"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"0012821X"}],"prism:publicationName":[{"@value":"Earth and Planetary Science Letters"}],"dc:publisher":[{"@value":"Elsevier BV"}],"prism:publicationDate":"2000-08","prism:volume":"180","prism:number":"3-4","prism:startingPage":"355","prism:endingPage":"367"},"reviewed":"false","dc:rights":["https://www.elsevier.com/tdm/userlicense/1.0/","https://www.elsevier.com/legal/tdmrep-license"],"url":[{"@id":"https://api.elsevier.com/content/article/PII:S0012821X00001710?httpAccept=text/xml"},{"@id":"https://api.elsevier.com/content/article/PII:S0012821X00001710?httpAccept=text/plain"}],"createdAt":"2002-07-25","modifiedAt":"2025-09-15","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360004232425661184","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Numerical experiments on thermal convection of highly compressible fluids with variable viscosity and thermal conductivity: Implications for mantle convection of super-Earths"}]},{"@id":"https://cir.nii.ac.jp/crid/1360004233285030016","@type":"Article","resourceType":"学術雑誌論文(journal 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